Electrical Gremlin (Ugh!)

[Horsevoice]

Our 30' Dutchmen has a converter. Shore power feeds the converter where it is distributed to 12V lights etc, and to AC and 110V outlets. It also (supposedly) charges the 12V deep cycle battery on the tongue frame. The battery is new. There are 4 wires comming out of the frame to the batterey...2 red and 2 black.
When shore power is disconnected, nothing works except the electric hitch jack...
Does anybody have any ideas where to start looking? I'd like to get 12V back to the lights and furnace so we can boondock...

Also - does the furnace (blower) work on 12V?

[Horsevoice]

Our 30' Dutchmen has a converter. Shore power feeds the converter where it is distributed to 12V lights etc, and to AC and 110V outlets. It also (supposedly) charges the 12V deep cycle battery on the tongue frame. The battery is new. There are 4 wires comming out of the frame to the batterey...2 red and 2 black.
When shore power is disconnected, nothing works except the electric hitch jack...
Does anybody have any ideas where to start looking? I'd like to get 12V back to the lights and furnace so we can boondock...

Also - does the furnace (blower) work on 12V?

[Luke Porter]

So, one set of the back and red go to the jack. The other set goes to the 12 fuse box. Might be a fuse inline on the red somewhere prior to the fuse box.

Need to check where the black and red enter the fuse box. Have a volt meter? If not, buy one. Get a cheap digital job for $10 or so. Any power there??

[axle]

there probably is a curcuit breaker in line under the frame, there is always some fuse or breaker in line between the batt and the converter..

[kampinguru]

Sounds like a battery disconnect switch is turned off. My trailer has a battery disconnect switch in teh storage compartment that isolates the batter from the rest of the coach, except for the jacks.

[Roam America]

after 2 hours of troubleshooting one day (convincing myself the converter was bad) I found two fuses on the output of the converter. they were hidden behind the power cord.

Bottom line is there could be many reasons. Check the simple and obvious first (eg: battery cutoff switch, fuses, etc). Then break out the voltmeter. Always start at one end of the circuit and work towards the other. Don't start in the middle of the circuit. Either work from the battery to the lights, or the from the lights towards the battery.

Good luck (BTW - that i-con is two thumbs up!)